https://www.siliconvalley.com/2021/04/27/injured-san-francisco-security-guard-sues-skateboarder-thrasher-magazine/

A San Francisco security guard who suffered brain damage in a confrontation with skateboarders is seeking damages from one of the alleged assailants, Thrasher magazine and building owners including the Trump Organization.

Dan Jansen, 57, was badly injured on Nov. 25, 2018, when he attempted to prevent skateboarders from doing stunts outside 555 California St., a Financial District skyscraper.